Muscles of the Trunk Flashcards

1
Q

Erector Spinae

A

Origin

  • Illiac crest
  • Cervical/Lumbar/Thoracic Vertebrae
  • Ribs

Insertion

  • Mastoid process
  • Ribs

Actions
- Extension (A)

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2
Q

Quadratus Lumborum

A

Origin
- Illiac crest

Insertion

  • Lumbar vertebrae
  • Rib 1/2

Actions
- Lateral Flexion

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3
Q

Rectus Abdominis

A

Origin
- Pubic Symphysis

Insertion

  • Xiphoid Process
  • Ribs

Actions
- Flexion (A)

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4
Q

External Oblique

A

Origin
- Ribs

Insertion
- Linea Alba

Actions

  • Flexion
  • Lateral Flexion
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5
Q

Internal Oblique

A

Origin

  • Illiac Crest
  • Inguinal Ligament

Insertion
-Linear Alba

Actions

  • Flexion
  • Lateral Flexion
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6
Q

Transverse Abdominis

A

Origin

  • Lumbar vertebrae
  • Ribs

Insertion
- Linear Alba

Actions
- Compression (A)

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